"Grace Reinhart Sachs is living the only life she ever wanted for herself. Devoted to her husband, a pediatric oncologist at a major cancer hospital, their young son Henry, and the patients she sees in her therapy practice, her days are full of familiar things: she lives in the very New York apartment in which she was raised, and sends Henry to the school she herself once attended. Dismayed by the ways in which women delude themselves, Grace is also...